diff --git a/Cargo.lock b/Cargo.lock
index 54afde4..f3d30e1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -193,7 +193,7 @@ dependencies = [
 
 [[package]]
 name = "fif"
-version = "0.2.13"
+version = "0.3.0"
 dependencies = [
  "cached",
  "cfg-if",
diff --git a/Cargo.toml b/Cargo.toml
index 47c9a7b..6dab421 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "fif"
 description = "A command-line tool for detecting and optionally correcting files with incorrect extensions."
-version = "0.2.13"
+version = "0.3.0"
 authors = ["Lynnesbian <lynne@bune.city>"]
 edition = "2018"
 license = "GPL-3.0-or-later"
diff --git a/README.md b/README.md
index 973a4bb..5d1f3b4 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
-fif
+<div align="center">fif</div>
 ===
+<div align="center">
+
+![A screenshot demonstrating fif's ability to detect the correct file extensions for a few files.
+](https://gitlab.com/Lynnesbian/fif/-/blob/master/doc/screenshot.png)
+
 [![Version](https://img.shields.io/crates/v/fif.svg?logo=rust&style=flat-square)
 ](https://crates.io/crates/fif)
 [![Minimum Supported Rust Version](https://img.shields.io/badge/msrv-1.43.0-orange?logo=rust&style=flat-square)
@@ -13,7 +18,8 @@ fif
 [![Unsafe forbidden](https://img.shields.io/badge/unsafe-forbidden-success.svg?style=flat-square)
 ](https://github.com/rust-secure-code/safety-dance/)
 
-A command-line tool for detecting and optionally correcting files with incorrect extensions.
+*A command-line tool for detecting and optionally correcting files with incorrect extensions.*
+</div>
 
 fif recursively scans the given directory and outputs a shell script to fix the name of any files with incorrect
 extensions. By default, fif will scan all non-hidden files in the given directory, and will ignore symlinks.
@@ -29,8 +35,8 @@ that it's not doing anything that will give you a headache before running it.
 cargo install --locked fif
 ```
 
-To update, simply re-run this command, or use a tool like
-[cargo-update](https://github.com/nabijaczleweli/cargo-update).
+To update, simply re-run this command, or use a tool like [cargo-update
+](https://github.com/nabijaczleweli/cargo-update).
 
 #### Other backends
 `fif` supports using [`infer`](https://crates.io/crates/infer) or [`xdg-mime`](https://crates.io/crates/xdg-mime) as its
diff --git a/doc/screenshot.png b/doc/screenshot.png
new file mode 100644
index 0000000..0297739
Binary files /dev/null and b/doc/screenshot.png differ
diff --git a/src/findings.rs b/src/findings.rs
index c24ebf4..63699ea 100644
--- a/src/findings.rs
+++ b/src/findings.rs
@@ -18,6 +18,6 @@ pub struct Findings<'a> {
 
 impl<'a> Findings<'a> {
 	pub fn recommended_extension(&self) -> Option<String> {
-		mime_extension_lookup(self.mime.clone()).map(|extensions| extensions[0].to_owned())
+		mime_extension_lookup(self.mime.clone()).map(|extensions| extensions[0].clone())
 	}
 }
diff --git a/src/main.rs b/src/main.rs
index 2a07ded..93832ed 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -74,6 +74,7 @@ fn main() {
 		// .target(env_logger::Target::Stdout) // log to stdout rather than stderr
 		.init();
 
+	trace!("Initialise mimetype database");
 	init_db();
 
 	debug!("Iterating directory: {:?}", args.dirs);
@@ -121,6 +122,8 @@ fn main() {
 		)
 		.collect();
 
+	trace!("Scanning complete");
+
 	for result in &results {
 		match result {
 			Ok(r) => {
@@ -276,13 +279,11 @@ fn scan_from_walkdir(entries: &[DirEntry]) -> Vec<Result<Findings, ScanError>> {
 		if #[cfg(feature = "multi-threaded")] {
 			use rayon::prelude::*;
 
-			// rather than using a standard par_iter, split the entries into chunks of 32 first.
-			// this allows each spawned thread to handle 32 files before before closing, rather than creating a new thread for
-			// each file. this leads to a pretty substantial speedup that i'm pretty substantially happy about 0u0
+			// split the entries into chunks of 32, and iterate over each chunk of entries in a separate thread
 			entries
-				.par_chunks(32) // split into chunks of 32
+				.par_chunks(32)
 				.flat_map(|chunk| {
-					chunk // return Vec<...> instead of Chunk<Vec<...>>
+					chunk
 						.iter() // iter over the chunk, which is a slice of DirEntry structs
 						.map(|entry| scan_file(entry))
 						.collect::<Vec<_>>()
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index c97bc14..5983882 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -387,3 +387,24 @@ fn writables_is_correct() {
 		writables!["henlo", (Path::new("henlo")), Newline, Space]
 	)
 }
+
+#[test]
+/// Test various combinations of verbosity flags.
+fn verbosity() {
+	assert!(Parameters::try_parse_from(&["fif", "-q", "-v"]).is_err(), "Failed to reject usage of both -q and -v!");
+
+	let mut expected_results = HashMap::new();
+	expected_results.insert("-qqqqqqqq", "off");
+	expected_results.insert("-qqq", "off");
+	expected_results.insert("-qq", "error");
+	expected_results.insert("-q", "warn");
+	expected_results.insert("-s", "info");
+	expected_results.insert("-v", "debug");
+	expected_results.insert("-vv", "trace");
+	expected_results.insert("-vvv", "trace");
+	expected_results.insert("-vvvvvvvv", "trace");
+
+	for (flags, level) in expected_results {
+		assert_eq!(Parameters::parse_from(&["fif", flags]).default_verbosity(), level)
+	}
+}